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Analysis of good strategies for domestic precision casting products

  • Categories:Industry News
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  • Time of issue:2018-04-28
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(Summary description)Industry insiders analyzed that there are currently three major problems in my country's precision casting products.The environmental problems of my country's foundry industry are also manifested in the excessive consumption of natural resources.The above shows the severity of the environmental problems in my country's precision casting industry.The use of high technology to achieve green casting is a key issue that needs to be solved.

Analysis of good strategies for domestic precision casting products

(Summary description)Industry insiders analyzed that there are currently three major problems in my country's precision casting products.The environmental problems of my country's foundry industry are also manifested in the excessive consumption of natural resources.The above shows the severity of the environmental problems in my country's precision casting industry.The use of high technology to achieve green casting is a key issue that needs to be solved.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2018-04-28
  • Views:0
Information

Industry insiders analyzed that there are currently three major problems in my country's precision casting products.The environmental problems of my country's foundry industry are also manifested in the excessive consumption of natural resources.The above shows the severity of the environmental problems in my country's precision casting industry.The use of high technology to achieve green casting is a key issue that needs to be solved.

First,the process level is low,the quality of precision casting products is poor 1,the casting cracking problem is serious.

2.The segregation and inclusion defects of large castings are serious.

After the solidification of large steel castings and large steel ingots,there are macrosegregation and coarse grains at the root of the riser and the thick section of the casting.

3.The application of simulation software is not popular.

The casting process simulation is a necessary part of casting production.If you don’t have computer simulation technology abroad,you won't get an order.The computer simulation of the foundry industry in China started early.Although the core computing part has strong development capabilities,the overall software packaging capability is poor,resulting in mature commercial software development lagging far behind developed countries.A considerable number of foundry companies are discouraged from computer simulation technology.lack of trust.Although this situation has improved at present,it is rare for companies that have purchased casting simulation software to be able to play its role.There is an urgent need for software application training for enterprise employees.

4.The production capacity of ordinary castings is excessive,and the manufacture of high-precision castings is still difficult.The core technology and key products still depend on imports.

5.The precision casting process has a large margin.Due to the lack of scientific design guidance,it is difficult for process designers to control the deformation problem based on their experience.The casting processing allowance is generally 1-3 times larger than abroad.Large processing allowance,serious energy consumption of castings and raw material consumption,long processing cycle,and low production efficiency have become bottlenecks restricting the development of the industry.

6.Pouring system design is unreasonable.Due to improper design,there are defects such as gas,inclusions,etc.,resulting in low casting yield and pass rate.

Second,serious environmental pollution and poor operating environment In addition to a few large-scale enterprises such as FAW,FAW,Daqi Daqi,Shenyang Liming Company,etc.,with excellent production equipment,advanced precision casting technology,and basically environmental protection measures in place,most foundry production equipment Obsolete,outdated technology,and rarely pay attention to environmental issues.

In the 1980s,the government made special adjustments to small-scale,low-tech,and heavily polluted enterprises,which increased the degree of intensification of the enterprises,but the extensive characteristics of casting production have not been fundamentally changed.

The environmental problems of my country's foundry industry are also manifested in the excessive consumption of natural resources.

3.High energy consumption and raw material consumption The energy consumption of my country's precision casting industry accounts for 25%-30%of the total energy consumption of the machinery industry,the average energy utilization rate is 17%,and the energy consumption is about twice that of the foundry developed countries.

The energy consumption per ton of qualified cast iron parts produced in China is 550-700 kg of standard coal,and 300-400 kg of standard coal abroad.The energy consumption per ton of qualified cast steel parts produced in China is 800-1000 kg of standard coal.500-800 kg of standard coal.

According to statistics,the investment of materials and energy in the production process of castings accounts for about 55%-70%of the output value.The gross weight of China's castings is 10%-20%higher than that of foreign countries.The average production rate of steel castings is 55%,and 70%abroad.

The main charge in foundry production is pig iron,scrap steel,coke,limestone,etc.,molding sand and core sand.Mainly the transportation,mixing,modeling,core making,baking,melting,pouring,cooling,falling sand,cleaning and post-processing of raw sand,clay,coal powder,resin and other binders,curing agents,old sand,etc.The process,in terms of its operation content,is carried out in mechanical vibration and noise,some of which are still working in high temperature melting and pouring,and some produce irritating odors,and the dust working environment is even worse.

The above shows the severity of the environmental problems in my country's precision casting industry.The use of high technology to achieve green casting is a key issue that needs to be solved.

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